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I'm not sure about this, but here it go: In gcc, -O3 is a flag used to include relatively expensive optimizations so there are [many] times where -O2 (only sure optimizations) is rather quickier than a -O3 blindfolded try to measure speed increase between -O2 and -O3 with profiling, if it's...

just curious about the hardware: as far as I programmed on x86, you can set initial display values to anywhere that you wish (in video ram, obviously, and there's a 4-byte-alignment) and that allowed to develop pretty fast vertical scrolling (by setting display to one-line-later or...

well, in linux you can use the libmikmod, wich is capable of playing MODs and also IT, S3M and XM, so you won't be bothered by limitations of the genuine MOD standard I think mod-wise files are best for background music, the only bad thing is that it cannot have much voice recording (unless you...

try to measure diode forward voltage drop, if > 1V probably it's a zener diode, so it's not the one you're looking for what about the othe side of the pcb? can it be removed?

I see you don't understand much of electronics, and also have such a bad attitude, so I'll be short.. A capacitor can raise your PSU peak maximum power output (pmpo, but not 'music' ones) because it can hold charge faster than any other electronic device, so you won't get GP2X running out of a...

I think that you can attach a large (some are bigger than a AA battery) electrolytic capacitor, and it will surely boosts you PSU's peak output power, and possibly will dimmish some peaks on you unregulated power supply (turning out to be behave like a regulated PSU) I'd recommend that you...